Support eor sewing-machine motors



C. H. BEACH.

SUPPORT FOR SEWING MACHINE MOTORS.

APPLICATION HLED NOV. 6. 1916.

1 353,21 1 Patented Sept. 21, 1920.

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SUPPORT FOR SEWING MACHINEMOTURS.

m M s n M m a APPLICATION FILED NDV- E, HJIG.

L. H. BEACH.

SUPPORT FOR SEWING MACHINE MOTORS.

APPLICATIO N FILED NOV- @1916- A 1,353,21 1 PatentedSept. 21, 1920.

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PATENT OFFICE.

WISCONSIN, ASSIGNOR T0 FREDERICK J. OSIUS, 01:

RACINE, WISCONSIN.

SUPPORT FOR SEWING-MACHINE MOTORS.

Application filed November 6. 1916. Serial To all whom it may concern.

Be it known that l, timesron Ht Linaon, a citizen of the lJnitcd States, residin at Racine, in the county of Racine andbtate of [isconsiir have invented a certain new and useful Improvement in Supports for Sewing-il'lachine Motors, of which the following is a full, clear, concise, and exact. dtscri )t1on.

It y invention relates to improvements in supports for sewing machine ihotors.

In certain types of sewing machines in extensive use at the present time, the machine is closed by swinging the head downwardly into a compartment beneath the level of the table top. The arrangement is so compact that only a little clearance is left between the various parts of the head and the table, as said head is swung through the opening in said table.

One object of the present, invention is to provide a motor support 'which shall permit. the head of the sewing machine to he swung downwardly beneath the table top without interference from the motor, despite the limited clearance available;

Another object is to provide a motor sup ort which may be attached to the machine iiy making use of the belt holes in the table rendering it unnecessary to make additional holes or in other ways to mar the appearance of said table top, said support permitting the motor to be Inmed to a position where it will not obstruct the closing of the machine in the usual manner, thereby rendering it unnecessary to remove the motor each time the machine is closed and making said motor practically a. permanent art of the machine 'A iiirther object is to provide a device of this character wherein the. motor may be readily reversed with r spect to its support, to permit the same motor to rotate the hand wheel in one direction or the other, depending on the design of the particular sewing machine to which said motor is attached.

Additional objects and advantages may readily be inferred from the more detaileddescription hereinafter givei'i of the clilludixmen-t of the'invention illustrated .in the drawing. v V

Figure'l isa rear elevation of the head oi the sewing machine showinp the relation of the niotor thereto.

Specification of Letteis Patent.

Patented Sept. 21, 1920.

l ig. A is a sertion on the line 2;2 of oi Fig l. big. 3 is a section on the line 3 -15 of Fi 2.

lg -l is a section on the. line 4-- 1 of Fig 1.

"1g. 5 is an elevation partly in section of certain details of the motor supp rt.

l'igi (3 Is a section on the lino t3ti ol Fig l.

lho lop oi the sewing non-limill) or the lulih' lop as it is rolled. supports a hinged leal it (lig. 3) on whnh lent flu sewing machine head. designated as a whole by refis a section on the llllt' T---7 oi Plilltt' letter l is nionntmh whereby the head may he swung downwardly to the dotted line iosition shown in said figure. the head o the sewing machine includes the usual hand \vheelllfi and'belt'pulley ll,

the latter being alined with belt holes 15 in the hinged supporting member l],

The electric motor, by means of which the sewing machine i to be driven, is provided with a base which is preferably L shaped. ()ne arm of the L is romposcd of telescopic m mbers Hi. 17 ezn-h provided with u downwardly pmjerting pin 1% which pin ha ridges thereon. giving it a roughened surl'arr adapted to take firm hold on the wooden support when the device i light enedv liuldler \vasliris W are i irovidr l to pron-n1 marriog ol the polished surl'zuxe ol' the hinged leaf. The telescoping membersand pins eonsti tute a clamp which may be tightened by means of a screw threaded rod 20 having a knurled head 21. Said rod passes through an opening in the closed end 22 of the inner tubular member 10 whereby the iuneikmember may be drawn into the outer member to render the clamp eil'eetive. The bottom of the inner tube is flattened and is engaged by the flattened end 23 of the outer tube to prevent relative rotation of these members.

The other arm of the L shaped base consists of a rod 24 having a spline groove. 35 therein. freely back and forth on said rod and supports a member 27 having a bifurcated lower end provided with openings permitting it to rock about said sleeve. Said member is held A sleeve 26 is arranged to slide lllf collars 28 on opposite sides thereof. To prevent rotation of said sleeve and collars, with res met to said rod, a pin 29 is provided, w ich fits within the spline groove 25, thereby permitting said sleeve to slide back and forth along the rod 24 without turning. The member 27 may turn about said sleeve through a small angle, its movement being limited by a pin 30 received within a recess 31 in the lower end of the member 27. (Fig. 7).

A suitable spring 32 is provided, to impel the member 27 toward the head of the sewing machine as far as permitted by the in 30 and slot 31. The spring is prefera ly a. flat 8 rin having its lower end curved about he seovie 26 and its extremity 33 fitted within a slot in said sleeve. Its 11 per end resses against the member 27. aid mom or 27 supports a short bracket 34 the latter being pivoted on the former, having a-tongue 35 received within a groove in the upper part of the member 27 and being pivotally connected by. a pin 36. As shown in Fig. l, the bracket 34 cannot be swung be yond a vertical position by reason of the square shoulders 37 on one side of the upper ends of the supporting member 27. The other sides being rounded, however, as shown at 38, said bracket may be swung downwardly approximately to horizontal position. This bracket is locked in vertica position by a spring latch 39 which engages in a recess in the lower end of the tongue 35 (Fig. 4). The bracket may be forcibly moved from its vertical position however, and swung to its horizontal position.

The bracket 34 supports an electric motor 40. This motor may be of any type and construction suitable for the purpose and includes the usual armature shaft 41 baring a friction driving wheel 42 thereon which is held in yielding engagement with the hand wheel 13, by means of the spring 32. The drivin position of the motor is the one shown in Fig. (l, the base being so designed that when the pins 18 are dropped into the belt holes 15 and the clamp tightened, the motor will be so ositioned with respect to the hand wheel t at the friction wheel 42 may readily be made to engage said hand wheel. The fact that the sleeve 26 may he slid back and forth along the supporting rod 24, makes it possible to secure the desired frictional engagement of the driving and driven wheels, regardless of slight variations in the location of the hand yvheel with respect to the belt )ulley. There is considerable variati a in t is respect in difl'erent ty es of sewing machines and in some cases the belt-pulley is on the outside of the hand wheel instead of on the inside thereof. v

There is also a variation in the different sewing machines in that in some the hand wheel rotates in one direction andin the others in the reverse direction. In order to avoid the necessity for reversing the direction of the rotation of the motor, 1 provide means whereby the motor me be turned with respect to its support there y permitting it to drive the hand wheel in a reverse direction even though the rotation of the armature with respect to the fields remains unchan ed. This turning of the motor isaccomplis ed by removing the pin 36 whereupon the motor supporting bracket 34 and the motor may be turned and remounted on said pin with the armature shaft reversed end for end. The cap 43 which screws into either of the rejecting bosses 44 is then removed and tlie frictionpulley 42 also removed from the end of the shaft on which it is located by unscrewing the retaining cap 45 whereupon said pulley may be mounted on the opposite end of the'armature shaft and the cap 43 used to cover the opposite projecting end of said shaft.

if the machine were closed in the usual manner. with the motor in its driving position it would not be possible in some types of machines. to completely close the machine and cover the opening through which the head is lowered. To obviate this difficulty, the construction previously described is provided, whereby the motor and its vertical supporting members 27, 34 may first be swung away from the. hand wheel through a small are about the rod 24 as a center, after which the motor may be swung downwardly to the dotted lined position shown in Fig. 1, and if necessary said motor and said supporting members may be slid to the right somewhat along the supporting rod 24. In this position the motor is swung inwardly toward the head of the machine by the spring 32 to the limit of the permissible movement. The head may now be readily lowered in the usual manner, the relative position of said head and motor being shown in dotted lines of Fig. 2.

It will be seen that not only can the machine be closed in the usual way with the supporting structure described, but the motor may be left on the machine as practically a permanent attachment; otherwise it might be necessary to remove the motor every time the machine is closed.

It is obvious that certain features of the invention are capable of use independentl of other features and that various'modifi cations may be made in other respects in the structure described herein; without departing from the invention.

Having thus described my invention, what I claim as new and desire to secure as tors Patent of the United States is:

1. A sewing machine motor support comprising a base having projections fitting within the belt holes and having yielding loo means for holding the motor in frictional driving engagement with the hand wheel.

2. A sewing machine motor comprising relatively adjustable members each having a projection received. within one of the belt holes and an upwai'dly extending member arranged to swing aboilt a horizontal axis and normally biased toward the hamlet the sewin r machine.

3. sewing machine motor support comprising an L shaped base, means on one arm of the L and entering the. belt holes of the sewing machine for securing it in place and means on the other arm of said L for pivotally mounting the motor and permitting adjustment of it laterally with respect to the hand wheel.

4. A sewing machine motor support com prising a base having means entering both belt holes of the sewing machine, a bracket for the motor, a pivotal connection between the two permitting the motof'to be swim vrom horizontal to vertical position and means permitting movement of said motor toward and away from the sewing machine head.

5. A sewing machine motor support comprising a base having means entering both elt holes of the sewing machine, an upright member adjustable back and forth along said base and a motor pedestal pivoted to said upright member.

6. A motor support comprising a base having a pair of belt hole engaging projections, a supporting member pivotally mounted thereon and adjustable laterally along the pivotal axis and a motor supporting member pivoted to said first member about an axis at right angles to said first axis.

7. A motor support comprising a horizontal rod, means for supporting the ends of said rod above the table top, said means having a pair of belt hole engaging projections, sleeve slidable on said rod and having non-rotatable engagement therewith, an upright member on said sleeve and a spring associated with said sleeve and said member for impelling the latter toward the sewing machine head.

8. A sewing machine motor support comprising a horizontal splined shaft, a sleeve slidable on said shaft and having means engaging said spline to prevent rotation, an upright member having a bifurcated lower end rotatably mounted on said sleeve, a spring secured to said sleeve and bearing against said member above bifurcated portion, a motor bracket pivoted to said membar and means for holding said bracket in different positions of adjustment.

9. A-sewing machine motor support comprising telescoping members each having a pin projecting therefrom at opposite ends, a screw threaded spindle assmg loosely through the end of one of sand members and having screw threaded engagement with the adjacent end of the other said member and means preventing relative rotation of said members.

10. A sewing machine motor base comprising a horizontal supporting rod, a pair of tubular telescopical members arranged at right angles thereto, a roughened pin proj ecting downwardly from each of said members and rubber pads holding said members and-said rods in elevated position.

11. The combination with a table top having an opening, of a leaf hin ed therein, a sewing machine head supporte on said leaf, said head comprising a hand wheel and a belt pulley, a motor base supported on said leaf and held in place by projections received within the belt holes, an upright member pivotally supported on said ase, a bracket pivotally secured to said member, a sewin machine motor secured to said bracket, sai motor having a friction driving wheel in engagement with said hand wheel, and a spring on said base impelling said motor toward said hand wheel, said u right member and hence said motor being a justable along said base to bring said friction wheel into and out of the plane of said hand wheel, and said pivoted bracket permitting said motor to be swung downwardly close to said head whereby the sewing machine may be closed without obstruction from said motor.

12. The combination with a sewing machine head having a hand wheel, of a motor support having a pair of belt hole engaging projections, a motor mounted thereon, having a friction driving wheel, and means for holding the motor with its driving wheel in yielding engagement with said hand wheel, said motor support comprising two detachable members having pivotal engagement whereby they are perm1tted relative move-- ment and whereby the motor may be reversed end to end with respect to its support to permit it to rotate said hand Wheel in either direction.

In witness whereof I hereunto subscribe my name this 21st day of October, A. D. 1916.

CHESTER H. BEACH. 

